Lock assembly

ABSTRACT

Lock assembly including a first locking device in two parts intended to be mounted on a door, and a second detachable locking device intended to be treaded from above on the two parts of the first locking device when the door is closed. One of the locking devices shows a projecting portion and the second locking device shows a recess cooresponding to the projecting portion with a cooresponding wedge-shape. The projecting portion shows an outward directed rim along the sides extending to its wedge-shaped tip, and the recess shows an inwards directed rim along the cooresponding sides. A faucet extends in a locked position through the projecting portion across the recess. The projecting portion shows a half-cylindric cavity and the faucet shows a half-cylindric section and is fit into the bottom of the half-cylindric cavity.

TECHNICAL FIELD

The present invention concerns a lock assembly including a first lockingmeans in two parts intended to be attached, e.g. screwed vertically withat least one of its two parts on a door, and a detachable second lockingmeans, intended to be brought on the two parts of the first lockingmeans from above when the door is closed, whereby one of the lockingmeans is showing a projecting portion and the second locking means isshowing a recess corresponding to the projecting portion, and wherebythe projecting portion is intended to be locked in the recess.

BACKGROUND TECHNICS

The locking assembly according to the preamble preferably is intended tobe used for locking of a container door, which as a rule is constitutedby a double door at one end of the container. A lock assembly forlocking of such a door is known from the Swedish patent publication SE9003139-4, showing a first locking means in two parts, which parts areintended to be screwed on each of the door leaves of the container, anda detachable second locking means intended to be brought into notches inthe parts of the first locking means and locked to one of these parts bymeans of a padlock.

A drawback with the known lock assembly is that the parts of the splitfirst locking means can be brought out of their position at carelesstreating of the door leaves causing difficulties in entering thedetachable second locking means into the notches in the parts of thefirst locking means. As the notches in the first locking means aremutually parallel a sticking effect also can arise which also makes thetreading of the second locking means more difficult. Also the tongues,by which the padlock keeps the first and the second locking meanstogether, is a weakness in the construction that easily can bedemolished by outer effects. The known locking device also shows arelatively complex shape which makes its manufacturing more expensive.

DESCRIPTION OF THE INVENTION

The purpose with the present invention is to bring about a lock assemblyaccording to the preamble which is not showing the drawbacks of theknown lock assembly mentioned above. The lock assembly according to theinvention is including a first looking means in two parts intended to bebrought, e.g. screwed vertically with at least one of its two parts on adoor, and a detachable second locking means intended to be brought fromabove on the two parts of the first locking means when the door isclosed. One of the locking means is showing a projecting portion and thesecond locking means is showing a recess corresponding to the projectingportion.

The lock assembly according to the invention is characterized in thatthe projecting portion and the recess is showing a mutuallycorresponding wedge-shaped, that the projecting portion is showing anoutwardly directed rim, that the recess is showing an inwardly directedrim, and that the first locking means and the second locking meansbrought together are arranged in that the outwardly directed rim of theprojecting portion hooks behind the inwardly directed rim of the recess.

By the projecting portion and wedge-shape of the recess is achieved thatthe parts of the first locking means in a simple way can be forced inthe right position when the second, detachable locking means is attachedeven if the parts of the first locking means is not in an exact desiredmutual position, eventually by influence of relatively big forcesdirected from above.

Preferably the two parts of the fix first locking means put together isshowing a wedge-shaped projecting portion the tip of which is directedupwards, which is provided with an outwardly directed rim along thesides constituting the wedge-shape, and which is divided along avertical plane extending perpendicular to the plane through the door,whereby the detachable second locking means is showing a correspondingwedge-shaped recess, the tip of which also is directed upwardly, andwhich at locking of the door is intended to be brought upon theprojecting portion of the first locking means two parts from above.

More details and characterizing features concerning the lock assemblyaccording to the invention will be clear from the description todrawings below and from the claims.

BRIEF DESCRIPTION OF DRAWINGS

The invention is described below as an example of an embodiment inconnection with the enclosed drawings.

FIG. 1 shows a locking means in two parts to a lock assembly, the partsof which are intended to be screwed to one part each of a double door.

FIG. 2 shows the locking means according to FIG. 1 seen from the leftside.

FIG. 3 shows a detachable locking means intended to connect the twoparts of the divided locking means according to FIG. 1.

FIG. 4 shows the locking means according to FIG. 3 seen from the leftside and with a mounted lock cylinder.

FIG. 5 shows a cross section of the detachable locking means along line5--5 in FIG. 3.

FIG. 6 shows a divided locking means in an alternative embodiment of theinvention, the parts of which are intended to be screwed on each part ofa double door.

FIG. 7 shows the locking means according to FIG. 6 seen from the rightside.

FIG. 8 shows a section between the parts of the locking means along theline 8--8 in FIG. 6.

FIG. 9 shows a detachable locking means for connecting the locking meansaccording to FIG. 6.

FIG. 10 shows the detachable locking means seen from the left side.

FIG. 11 shows an alternative embodiment of the detachable locking meansaccording to FIG. 3 seen from the side which is facing the fix lockingmeans in an assembled position.

FIG. 12 shows the detachable locking means according to FIG. 11 seenfrom above.

FIG. 13 shows the detachable locking means according to FIG. 11 seenfrom one side.

FIG. 14 shows a detail of the detachable locking means according to FIG.11 seen in a section through the lock cylinder.

FIG. 15 shows separately a safety cage to the lock cylinder according toFIG. 14 seen in a direction to the key hole in the lock.

FIG. 16 shows a lifting detail on the fix locking means partly in asection through a spring device.

FIG. 17 and 18 shows another alternative embodiment of the detachablelocking means seen from the side.

DETAILED DESCRIPTION

The lock assembly according to FIG. 1-5 includes a male part 1 dividedin to two parts intended to be screwed e.g. on each part of a doubledoor, and a detachable female part 2 intended to be brought upon themale parts 1 from above when the door is closed.

The male parts 1 constitutes reflections of each other and show togethera wedge-shaped center portion 3 showing a rim 4 projecting along thewedge. A half-cylinder cavity 3.1 runs across the projectingwedge-shaped portion 3 on the assembled male parts 1.

The female parts 2 show a wedge-shaped recess 5, with the same shape asthe two assembled male parts 3, which means that the wedge-shaped recess5 of the female part shows a rim 6 projecting inwardly to the recess andis intended to engage the corresponding rim 4 on the male parts 1.Further the female parts 2 include a cylinder-shaped faucet 7, runningacross the wedge-shaped recess 5 and to one half fit in into the bottomof the same and showing a half cross section and connected with anordinary lock cylinder 8.

The lock assembly is closed in that the female part 2 is treaded on themale parts from above, after which the lock cylinder 8 is turned in thatway that the faucet 7 is turned so that the portion showing the halfsection is turned a half turn blocking a lifting of a the female part 2.The lock cylinder 8 is fixed in the female part 2 by screws or pins 9located on the side facing the male part 1.

The female part 2 in the lock assembly also is provided with at leastone safety bar 10, extending parallel to the faucet 7 and freelyrotatable along its center axis which prevents that the female part 2can be cut in pieces.

The lock device according to FIG. 6-10 includes a female part 11 in twopieces intended to be screwed on each part of a double door, and adetachable male part 12, intended to be treaded on the female parts 11from above when the door is closed.

The female parts 11 constitutes reflections and show together awedge-shaped recess 13 showing a rim 14 projecting along the recess. Thefemale parts 11 include a cylinder-shaped faucet 17 extending across thewedge-shaped recess 13 with one half fit in into the bottom of the sameand showing a half cross section and which is connected to a lockcylinder 18 which is displaceable between an outer position, in whichthe doors can be opened, and an inner position, in which the door can belocked.

The male part 12 show a wedge-shaped center portion 15 with the sameshape as the female parts 13 put together, which means that thewedge-shaped center portion 15 shows a projecting rim 16 intended toengage the corresponding rim 14 on the female parts 11. A halfcylinder-shaped groove 15.1 extends across the projecting wedge-shapedportion 15 on the male part 12.

The lock assembly is closed by that the male part 12 is treaded on thefemale parts 11 from above, after which the lock cylinder 18 is pushedinwards and turned in that way that also the faucet 17 is turned so thatits half cylinder portion is turned a half turn and blocking a liftingof the male part 12. The axial displacement of the lock cylinder 18 islimited by screws and pins located in the side facing the male part 12.

The male part 12 in the lock assembly also can be provided with at leastone quenched safety bar, not shown in FIG. 9 or 10, but extendinghorizontally over the width of the male part 12 and which is freelyrotatable along its center axis preventing the male part 12 to be cut inpieces.

The two alternative embodiments described above in connection with FIGS.1-10 thus are within the scope of the invention.

The detachable lock assembly shown in FIG. 11 and 12 is constituted by afemale part 2 mainly designed in the same way as the female part shownin FIG. 3 with the difference that the recess 5 is arranged in an outercavity 5.1 surrounded by walls 5.2. The outer cavity 5.1 has a shape anddimension permitting the fix male parts 1 to be fully enclosed in thefemale part 2 when assembled as shown in FIG. 13. A gap 5.3 thereby isarranged between the lower wall 5.2 and the fix male parts 1 with awidth corresponding the width of the rim 4 projecting from the fixwedge-shaped portion 3 of the male parts. In a locked position thedetachable female part 2 fully surrounds the fix male parts 1 whichreduces the possibilities to break away the female part 2 from the maleparts 1 with a tool. In order to make a demolition of the lock assemblymore difficult the female part shows a pyramidal shape with slopingsides.

In the embodiment of the female part 2 shown in FIG. 11 a guide groove19 is provided and intended to enclose a guide pin on one of the maleparts 1, not shown in the figure. The guide groove 19 extends in thedirection in which the female part 2 is treaded on the male parts 1permitting the guide pin to move corresponding the vertical movenecessary for bringing the female part 2 and the male parts 1 together.

The female part 2 shown in FIG. 11-13 is provided with a cylindric lockcylinder 8 connected with a faucet 7 of the same design as the one shownin FIGS. 3-5, which is turnable around its center axis. At the key holethe lock cylinder 8 is surrounded by a safety casing 8.1 provided with aflat end wall which is shown in detail in FIG. 14 and 15 and which ismanufactured of quenched steel. The safety casing 8.1 shows an outercylindric groove 8.2 in which a first stop screw 8.3 is brought from aprotected position when the parts of the lock are assembled. In FIG. 14the first stop screw 8.3 is shown brought from the inner side facing themale parts 1. A second stop screw 8.4 for the lock cylinder 8 is broughtparallel to the first stop screw 8.3 with the intention to keep the lockcylinder 8 fixed against turning sideways when the lock is opened orclosed by turning a belonging key. In FIG. 15 the safety casing 8.1 isseen in a direction to the key hole of the lock cylinder and showing anoblong aperture 8.5 in the end wall. When a key is brought through theaperture 8.5 and into the key hole of the lock cylinder 8 and turned thesafety casing will follow the turning as the lock cylinder 8 is keptfixed by means of the second stop screw 8.4. In an attempt to remove thesafety casing 8.1 using of a rotating drill the casing will start torotate without permitting the drill to penetrate into and release thelock cylinder. In order to prevent the faucet 7 to be removed from theend opposite the lock cylinder 8 by drilling also this one can beprovided with a groove 8.6 and a third stop screw 8.7 shown by dottedlines in FIG. 12.

In an alternative embodiment of the invention the safety casing 8.1 canbe replaced by or completed with a separate safety washer 8.8 which isarranged inside the end wall of the safety casing 8.1, shown dotted inFIG. 14, whereby the safety casing 8.1 shows a circular opening in theend wall as the separate safety washer 8.8 shows an oblong aperture fora key corresponding to the aperture 8.5 shown in FIG. 15. In thisalternative embodiment the safety casing can be firmly screwed by meansof the first stop screw 8.3 without the groove 8.2 shown in FIG. 14 asthe safety washer 8.8 is freely rotatable inside the safety casing 8.1giving protection against drilling.

In an unlocked position the female part 2 can be lifted from the maleparts 1 by means of a lifting spring 20 arranged in at least one of themale parts 1. The lifting spring 20 is arranged in a vertical bore andacting upon a piston 20.1 provided with a projecting lifting pin 20.2.The lifting point on the female part 2 is marked with an arrow A in FIG.11. In an unlocked position the rim 6 of the wedge-shaped recess 5 inthe female part 2 is kept lifted out of engagement from thecorresponding rim 4 on the wedge 3 to the male parts 1. By thearrangement of the guide groove 19 in the female part 2 and thecorresponding guide pin on one of the male parts 1 the lifting point Afor the lifting spring 20 can be arranged at the side of the balancepoint of the female part 2 without making the female part 2 tilting tothe balance point side when lifted by the force of the lifting spring20. The benefit of the guide groove 19 and the corresponding guide pinis obvious when the lifting spring 20 is placed in one of the maleparts 1. In one embodiment of the lock assembly, when the wedge portions3 on the male parts 1 are arranged in a big distance from each other aswell as also when two or more complete wedges 3 are arranged along aline and intended to carry an oblong female part 2 showing thecorresponding recesses 5, two or more lifting springs 20 can be arrangedalong the base plate of the male part. In this embodiment the femalepart 2 can e.g. constitute a bracket for an outboard-motor to be broughton the counter of a boat by male parts arranged on the same. This use ofthe lock assembly according to the invention is not shown in thefigures.

The female part 2 also can be given alternative designs as shown in FIG.17 and 18, in which figures the male parts 1 are shown in full lines andthe female part 2 is dotted. In FIG. 17 the female part 2 is shownconnected to the male parts 1 with a gap at the lower side of theassembly. In FIG. 18 the female part 2 is shown connected to the maleparts 1 partly by the wedge 3 and the corresponding recess, partly byanother stopping rim 21 arranged on a projecting portion of each malepart 1 and brought into a corresponding groove 22 in the female part 2.

We claim:
 1. Lock assembly including a first locking means (1) in twoparts intended to be mounted, e.g. vertically screwed with at least oneof its two parts on a door and a detachable second locking means (2)intended to be treaded from above on the two parts of the first lockingmeans (1) when the door is closed, whereby one of the locking meansshows a projecting portion (3) and the second locking means shows arecess (5) corresponding to the projecting portion (3), characterized inthat the projecting portion (3) and the recess (5) each show to eachother a corresponding wedge-shape in a plane parallel to the planethrough e.g. said door, that the projecting portion (3) shows anoutwards directed rim (4) along the sides extending to its wedge-shapedtip, that the recess (5) shows an inwards directed rim (6) along thesides extending to its wedge-shaped tip, and that a faucet (7) in alocked position extends through the projecting portion (3) respectivelyacross the recess (5) when the first locking means (1) is broughttogether with the second locking means (2), that the projecting portion(3) shows a half-cylindric cavity (3.1), and that the faucet (7) shows ahalf-cylindric section fit into the bottom of the half-cylindric cavity(3.1).
 2. Lock assembly according to claim 1, characterized in that thefaucet (7) is connected with a lock cylinder (8) arranged in thedetachable second locking means (2).
 3. Lock assembly according to claim1, characterized in that a cylindric safety bar (10), freely rotatablealong its center axis, extends parallel to the faucet (7) in the secondlocking means (12).
 4. Lock assembly according to claim 2, characterizedin that the lock cylinder (8) at its outer end is covered by at leastone safety means (8.1, 8.9) which is freely rotatable, and that thesafety means (8.1, 8.9) shows an aperture (8.5) mainly corresponding toa key hole in the lock cylinder (8).
 5. Lock assembly according to claim4, characterized in that the safety means includes a safety casing (8.1)surrounding the lock cylinder (8) and showing an end wall with anaperture (8.5) at the key hole in the lock cylinder (8).
 6. Lockassembly according to claim 5, characterized in that the safety casing(8.1) is blocked up against removal by means of a first stop screw (8.3)which is screwed into a cylindric groove (8.2) in the safety casing(8.1) from inside of the second locking means (2).
 7. Lock assemblyaccording to claim 6, characterized in that the lock cylinder (8) isblocked up against turning by means of a second stop screw (8.4) screwedto the lock cylinder (8) from inside of the second locking means (2). 8.Lock assembly according to claim 4, wherein the safety means include asafety washer arranged inside a safety casing (8.1) between the lockcylinder (8) and the inside of an end wall of the safety casing (8.1).9. Lock assembly according to claim 1, wherein the second locking means(2) fully surrounds the portions of the first locking means (1) in anouter cavity (5.1) surrounded by walls (5.2) along the sides of thesecond locking means (2).
 10. Lock assembly according to claim 1,wherein the second locking means (2) is connected to the two parts ofthe first locking means (1) also by another stopping rim (21) arrangedon a projecting portion of each part of the first locking means (1) andbrought into a corresponding groove (22) in the second locking means(2).